M size: 31 * 25 * 39 (length, width, height).Material: Oxford cloth.The dog pack adds a thicker, foldable pad to the lower back to give you extra support and prevent the bottom of the pack from digging into your lower back.Chest and abdominal straps help distribute weight and balance loads for your outdoor activities. Roll up the breathable, padded shoulder straps and mesh back for a comfortable fit.Here is an amazing dog hiking backpack made just for you. This dog travel pack can be worn as a frontal dog pack, keeping your puppy and kitten within your sight and keeping them safer. Anti-escape metal zipper and built-in straps that connect to the collar/safety belt to prevent escape.Multifunctional pockets on both sides for storing dog and cat essentials. With a removable and hand-washable soft bottom pad, plush and PE rattan on the sides, suitable for all seasons.The pet carry backpack has front and top access, making it easy for your pet to stick its head out. You can feed or play without putting down the cat backpack.Breathable mesh windows are specially designed for improved visibility and ventilation, providing your pet with a good view of the environment and more fresh air. So they will feel relaxed and calm during the journey.Product Specifications: 1* pet backpack